Cell Organization - neuron internal components

Question 1

Neuron internal components

Answer 1

Membrane, microtubules, mitochondria, nucleus, nucleolus, ribosome, Golgi apparatus, endoplasmic reticulum

Question 2

Membrane

Answer 2

• double layer of lipid molecules
• embedded in membrane are a variety of protein molecules that perform various functions
  a. detect and pass on information about substances outside cell
  b. control access to inside of cell allowing in some things and barring others
  c. active transport of material into and out of cell

Question 3

Nucleus

Answer 3

contains chromosomes and nucleolus

Question 4

Nucleolus

Answer 4

Produces ribosomes

Question 5

Ribosome

Answer 5

In cytoplasm “decodes” mRNA for formation of proteins used in the neuron

Question 6

Mitochondria

Answer 6

Converts glucose to ATP and stores CA. Contain different DNA (other from mother) than other cells

Question 7

Endoplasmic reticulum

Answer 7

– system of tubes for storage and transport of material within cell and important for protein synthesis.

• Rough – contains ribosomes that produce proteins which are transported out of cell or used in the membrane
• Smooth – channels for transport and storage of molecules

Question 8

Golgi apparatus

Answer 8

• packages proteins including neurotransmitters into vesicles
• produces lysosomes which break down substances no longer needed by the neuron

Question 9

Microtubules/ filaments

Answer 9

Transport substances between cell body and distal cell/ terminal button